VLDLR gene was chosen as a candidate gene infl uencing abdominal fat trait and body weight due to previous studies in human and mouse. Herein, the objectives of this study were to identify genetic polymorphisms of duck VLDLR gene, and to analyze association between combined haplotypes and abdominal fat trait in Gaoyou domestic duck. A total of 207 individuals, including the elite reservation fa...

body weight (bw) is a complex and important economic trait that may benefit from the implementation of marker assisted selection (mas). the objective followed in this study was to identify qtls associated with bw at different ages as distinct traits based on an experimental half-sib cross of japanese quails divergently selected for bw at 4 weeks of age. the body weights at hatch, and as well at...

Mate choice by phenotype matching, whereby individuals prefer a mate whose phenotype is similar to their own, should facilitate speciation with gene flow. This is because the genes that control mate signal (the phenotype being matched) also determine the preferred mate signal ("mate preference"). Speciation is made even easier if phenotype matching is based on a trait under divergent natural se...

It is still challenging to identify causal genes governing obesity. Pbwg1.5, a quantitative trait locus (QTL) for resistance to obesity, was previously discovered from wild Mus musculus castaneus mice and was fine-mapped to a 2.1-Mb genomic region of mouse chromosome 2, where no known gene with an effect on white adipose tissue (WAT) has been reported. The aim of this study was to identify a st...

Abstract Background Body traits are generally controlled by several genes in vertebrates (i.e. polygenes), which turn make them difficult to identify through association mapping. Increasing the power of studies combining approaches such as genotype imputation and multi-trait analysis improves ability detect quantitative trait loci associated with polygenic traits, body traits. Results A genome-...

a camel research station was established in 1990 at the central desert land of iran named kavir-e-loot, to evaluate productivity performance of one humped camel. the data consisted of birth weights (bw), three (w3), six (w6), nine (w9) months and yearling (w12) body weight of animals and the pedigree was registered during a period of 14 years since 1991 to 2004. the body weight traits of birth,...

the kermani sheep is an important meat producing an animal in iran and its economic efficiency is mainly dependent on its growth and reproduction ability. inter-simple sequence repeat (issr) is the genome region between microsatellite loci. the aim of this study was to evaluate the association of two different issr markers with predicted breeding values (pbv) of body weight trait in kermani she...

Different lineages experience different rates of phenotypic diversification, resulting in greater or lower variance in the expression of phenotypic traits among the species within a lineage. Here, morphological diversification is investigated in 14 different trematode families, based on a dataset comprising morphometric data on body size and 4 anatomical structures (oral sucker, ventral sucker,...